Fig. 3
From: The role of dynamic contrast-enhanced CT in characterization of solitary solid pulmonary nodules
Dynamic CE-CT study A Pre-contrast axial CT scan of the chest on mediastinal window, B–F contrast-enhanced axial CT scans of the chest on mediastinal window obtained 1,2,3,4 &15 min, respectively, after contrast injection: All figures showed well-defined pulmonary nodule with smooth border measured 2.2 cm in apeco posterior segment of left upper lobe and mean pre-contrast enhancement of 37 HU and mean peak enhancement (after 2 min) of 45 HU and net enhancement of 8HU. G Axial CT scan of chest in pulmonary window showing the same pulmonary nodule with regular smooth borders in apeco posterior segment of left upper lung lobe. Pathological diagnosis: pulmonary tuberculoma